5.0 Wave Sound Editing
Wave files are used for recording arbitrary
sound effects. Note however, long wave files
will quickly consume the space available on PLEO's flash card.
PLEO uses a custom 11KHz 8bit ADPCM compressed sound
format. MySkit can convert standard PCM wave files to be
compatible with simple one-click conversions. MySkit
filters, down-converts high bit-rates, and
combines multiple channels automatically.
5.1 Navigating Wave Files
|An orange marker bar shows the
current time position.
in the ruler or wave panes moves the marker.
in the ruler or wave pane, and a green selection marker
appears at the starting point. MySkit highlights between the
markers & changes any included motion keyframe tabs
green. The motion keyframes cannot be edited from the Wave
5.2 Capture & Record Wave Sounds
| MySkit supports wave
capture. Simply click the record button.
To select what to record from, click the "Setup" button.
Select a sound source from the list shown. Typically this would
be "Microphone", or an output "Mix". If one doesn't work,
trial & error is fairly painless.
Note: The available sound sources could vary depending on the
sound card manufacturer. Also, if your computer has multiple
sound cards, you might need to change the "Recording Device".
Alternatively, use commercial software such as
CoolEdit, then later import capture sound into MySkit.
5.3 Wave Sound Effects
MySkit has a variety of special effects for wave files:
- Increase/Decrease Volume. Make wave
sound louder/quieter by 25%.
- Increase/Decrease Speed. Make wave
sound play faster/slower (raise/lower pitch) by 50%.
- Amplify Volume. Arbitrary volume
adjust (25% to 400%).
- Echo Effects. Adds echo to produce
chorus effects (short delays), or canyon effects (longer delays).
- Fade In/Out. Make sound fade to
nothing, or any percentage of original, or visa-versa.
- Insert Silence. Inserts silence into
- Invert Wave. Inverts the
amplitude. Useful sometimes for matching up waves from different
- Normalize Wave. Changes overall volume
so maximum is 100% (ie: makes wave as loud as possible).
- Reverse Wave. Sounds plays back to
- Scale Sound. Stretch/shrink a wave
file. Note this will affect pitch.
5.4 Sound Start Time
PLEO supports arbitrary sound start
times. This is very useful for aligning sound to
motions. The start time is specified in either
frames, or in time (seconds).
PLEO waits the specified interval, relative to the start of motion,
then begins the sound playback.
5.5 Undo/Redo Changes
If you make a change that doesn't work out, simply undo
(Edit Menu->Undo). MySkit supports unlimited undo (ie:
all edits since the wave file was loaded). If you undo too
much, you can reapply changes (Edit Menu->Redo).
Keyboard shortcuts of Ctrl+Z (Undo) and Ctrl+Y (Redo)
5.6 The Splitter Bar
The vertical splitter bar allows two views of the Wave
at once. To adjust the position of the splitter bar, select:
"Window Menu -> Split Window".
move the splitter at any time. To dock the splitter bar
(hide it), simply drag the
splitter to its left-most position.